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The Spherical Tokamak for Energy Production: theme issue introduction.

I T Chapman1, S C Cowley2, H R Wilson3

  • 1UK Atomic Energy Authority, Culham Campus , Abingdon, Oxfordshire OX14 3DB, UK.

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|August 26, 2024
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Summary
This summary is machine-generated.

The Spherical Tokamak for Energy Production (STEP) project details a prototype fusion power plant design. This summary covers the conceptual design, aiming for net energy and tritium self-sufficiency.

Keywords:
fusion energymagnetic confinement fusionplasma physics

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Area of Science:

  • Nuclear Fusion Engineering
  • Plasma Physics
  • Energy Systems

Background:

  • The UK government initiated the Spherical Tokamak for Energy Production (STEP) project in 2019.
  • STEP aims to develop a prototype fusion power plant utilizing a compact toroidal geometry.
  • This initiative represents a significant step towards commercial fusion energy.

Purpose of the Study:

  • To present a comprehensive summary of the conceptual design for the STEP fusion power plant.
  • To detail the scientific and engineering advancements over five years of design work.
  • To provide a snapshot of the current STEP design basis for future evolution.

Main Methods:

  • Conceptual design synthesis across multiple scientific and engineering disciplines.
  • Focus on achieving net energy output from fusion reactions.
  • Development of a tritium fuel self-sufficiency strategy.
  • Planning for maintenance regimes suitable for commercial power plant availability.

Main Results:

  • A detailed conceptual design basis for the STEP spherical tokamak has been established.
  • Key technical aims include net energy production and tritium self-sufficiency.
  • A viable maintenance strategy has been outlined for commercial extrapolation.

Conclusions:

  • The STEP project has achieved a significant milestone in fusion power plant conceptualization.
  • The current design provides a robust foundation for continued development towards fusion energy.
  • STEP's compact toroidal geometry offers a promising pathway for future commercial fusion power.